Merge "Update the minversion parameter."

tox.ini

@@ -1,14 +1,12 @@
 [tox]
-minversion = 3.1.1
+minversion = 3.2.0
 skipsdist = True
 envlist = py38,pep8,releasenotes
 ignore_basepython_conflict = True
 
 [testenv]
 usedevelop = True
-install_command = pip install {opts} {packages}
-setenv = VIRTUAL_ENV={envdir}
-         OS_STDOUT_NOCAPTURE=False
+setenv = OS_STDOUT_NOCAPTURE=False
          OS_STDERR_NOCAPTURE=False
 
 deps =